I am not sure I understand the question. Did you try searching by tire size? I took a quick look and tire rack has 44 tires in size 255/35/19 and 14 tires in size 285/30/19. Find a matching set and you're good to go. Don't worry about searching by vehicle if you know the sizes you want.

Trying to get same tires as the GTS, Pirrie Corsa 255/35/19, 285/30/19.

But based on TireRack, only 255/40/19, 285/35/19 are fror BMW cars.

Any thoughts on which tire size should i get, Thanks

Look again - the Pirelli Corsa System tires in the sizes you want are actually there on the TR website. If you're worried that they don't say "for BMW" it's because BMW didn't go to the trouble of getting a special tire made for a limited edition car (150 units). The ones that say "for BMW" were OEM tires on the M6 and were produced in the tens of thousands.

Look again - the Pirelli Corsa System tires in the sizes you want are actually there on the TR website. If you're worried that they don't say "for BMW" it's because BMW didn't go to the trouble of getting a special tire made for a limited edition car (150 units). The ones that say "for BMW" were OEM tires on the M6 and were produced in the tens of thousands.

Thank you, that makes sense to me. i thought corsa system only used exclusively on mid engine or rear engine cars.